Nakamura S, Milhorat T H
Brain Res. 1978 Sep 22;153(2):285-93. doi: 10.1016/0006-8993(78)90407-9.
Nerve fibers and nerve endings in the fourth ventricle choroid plexus of the adult rat were studied with the electron microscope. Nerve endings were found at two sites within the plexus: (1) on the smooth musculature of the blood vessels (i.e. vascular nerve endings), and (2) in the stroma between the choroidal epithelium and the fibrovascular core. Ultrastructurally all fibers were of the efferent type, and the majority were unmyelinated. No ganglion cell bodies were identified. Fibers ending in relation to the smooth muscle of the vessels presumably control the calibre of these vascular channels. Although the role of the stromal nerve endings is as yet unknown, these fibers may influence epithelial cell functions and thus indirectly regulate choroidal cerebrospinal fluid production.
用电子显微镜研究了成年大鼠第四脑室脉络丛中的神经纤维和神经末梢。在脉络丛内的两个部位发现了神经末梢：（1）在血管的平滑肌上（即血管神经末梢），以及（2）在脉络膜上皮和纤维血管核心之间的基质中。超微结构显示所有纤维均为传出型，且大多数无髓鞘。未发现神经节细胞体。与血管平滑肌相关的纤维末梢可能控制这些血管通道的口径。尽管基质神经末梢的作用尚不清楚，但这些纤维可能影响上皮细胞功能，从而间接调节脉络丛脑脊液的生成。
